Re: A governor, or speed limiter,
My understanding is that they put choke plates in the intake manifold below the carb. in taxies in Chicago in the 30s - 40s. Somebody was saying they would get on a high hill get up as much speed as possible, push in the clutch and let gravity do its thing, then pop the clutch to suck the thin metal plate into the manifold ( and no further ? ). So the suggestion is an intake gasket with a small hole?
Easy does it, but do it!